化学键和溶剂溶解度参数对功能化PU海绵的稳定性和吸收值的影响
Soheila Javadian1, Anita Ramezani1, S Morteza Sadrpoor1
1Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran.
Chemosphere
|August 24, 2023
概括
研究人员开发了一种新的疏水海绵,使用功能化的氧化石墨烯来吸收海水中的石油污染. 这种可重复使用的海绵显著提高了石油吸收能力,为海洋环境清洁提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业废水,洗船和石油泄漏造成的海洋污染对海洋生态系统和人类健康构成重大威胁.
- 迫切需要有效的方法来从海水中去除石油和有机溶剂污染物.
研究的目的:
- 开发一种高效且可重复使用的吸收材料,用于石油污染的补救.
- 为了研究改性聚氨海绵的吸油能力和可重复使用性.
主要方法:
- 聚氨 (PU) 海绵使用浸泡涂层技术与功能化石墨烯氧化物 (GO) 进行了修改,其中包括八甲胺 (ODA) 和油酸 (OA).
- 特性分析证实了改造的海绵 (GO-ODA-PU和GO-OA-PU) 的成功合成.
- 评估了不同溶剂的吸收能力,可重复使用性,接触角度和性能.
主要成果:
- 经过修改的GO-ODA-PU海绵具有显著增强的发动机油吸收能力,达到36g/g,而未经修改的PU海绵则为4g/g.
- 由于强有力的共价键,GO-ODA-PU海绵表现出优异的重复使用性,优于GO-OA-PU海绵 (其吸收能力下降了30%).
- 接触角测量表明疏水性 (GO-ODA-PU: 131°,GO-OA-PU: 115°),以及在特定可溶性参数范围内的半极溶剂的最佳性能 (18-19).
结论:
- 功能化氧化石墨烯改性聚氨海绵是有效的,可重复使用的材料,可吸收海水中的石油污染.
- GO-ODA-PU海绵为海洋石油泄漏清理提供了强大的解决方案,具有高石油回收率 (高达98%) 的潜力.
- 这种物质进步有助于减轻海洋环境中石油污染对环境的影响.
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